Valve-motion mechanism.



W E. DAMS & `C. B. HALL. `vALvE--n/l'f'nvlolxx MEcHAN|sm. APPLICATION HLEnJuLY-za 1914.- i 1,144,987. Patented July 6, 1915.

TED STATES PATE@ @F.tCE.

WILLIAM E. DAMS AND CHARLES B. HALLz OF TULSA. OKLAHOMA.

VALVE-MUTION MECHANISM.

mates?.

To (IN 'w71 mi? it may concern.'

Belt known that vve. "WILLIAM ADAMS and CHARLES B. HALL. citizens of the United States. residing;4 at Tulsa. in the county of Tulsa and tate or" Oklahoma. have invented new and useful improvements in Valve-Md tion lllechanism, of which the following is a specification.

This invention relates to improvements in valve motion mechanism tor the inlet or exhaust valves of internal combustion engines. the object or" the invention beine" to provide a novel type ot motion transmitting means between the valve stein and cam-shaft-operated actuating member whereby a `Sjradual and positive valve opening motion. tree Jfrom jcrlis and jars is secured. a positive subsequent closing" ot the valve insured. und aniple capacity tor adjustment to compensate for wear, etc.. provided for.

The invention con ts ot the tentures ot construction. combination and arrangement of parts herein fully described and claimed. leference beine' had to the accompanying; drawing' in which-- Figure 'l is a vieuv in elevation of the valve and improved valve motion mechanism. Fin'. 2 is a longitudinal section of the same.

Referring to the drawing. l designates the valve cage or chamber `oroyided with a port having a seat 2 against which the valve 3 is adapted to close. The valve 3 is connected with one end of a stem el projecting exterior-ly of the valve chamber and threaded at its outer end. as shown at- 5. The said threaded end 5 of the valve stem L receives a nut 6, and surrounding said stem between the nut and valve chamliier is coiled a valve closing spring 7. the tension of which may be regulated by adjustment of the nut to govern the action of thevalve.

The threaded end 5 of the valve stem enters an internally threaded socket 8 upon the inner end of a push rod 9. and is thus rendered adjustabl;r connected with said rod for the purpose ot taking up wear and compensating for variations in the action ot the parts of the valve motion mi anisin. The said socket 8 is ot greater dia inter than the bot y or outer end'oi` said rod 9 and forms an abutment shoulder l0 against which bears one end of a coiled motion transmitting spring ll. The other end of this spring il -surrcunds the inner end of a sliding sleeve 12 externally threaded to receive an adjust-- ing nut 13 and a check or lock nut 14.

Specification of Letterslatent.

. This sleeve slidably engages the outer end` n Ratented July, 1915.

Appiicauon filed :my 2s. 1914.. serieu no. 853.11'9.

operated in practice from the valve actuatin;T cani shaft orp the engine. The adjustable connection 1T between the yolte 15 and member 11 is ot' a type to permit relative adjustment between .said member 11 and the valve .stein und push rod to dispose Athc same a f frcutcr or less' lis-tance apart. within certain limits. :is occasion may reduire to suit varyin;r conditions or to coinpmisatc tor wear.

lt is io he undcrsti'aul that in the operation ot the engine the motion transmitting member moved longitudinally inwardly and outwari'lly. in a direction toward and from thc valve chamber and parallel with thevalve stem and push rod, and on its inward movement transmits opening motion to the valve 3. the valve being closed on the outward movement ot said motion transmitting member Toy 'the action of the spring 'i'. the spring ll serving" on the inward motion of the member i6 to transmitmotion therefrom to the push rod and on the closing movement of the valve to return the sleeve 1Q and member i6 to normal position in vv'i'hich the valve is closed during a certain preventing the valve from chattering on itsv seat. taking up all ordinary lost motion due to wear. and insuring a positive movementot the valve to the requisite degree without strain or irregularities of action of any kind. 'The spring il in reacting slides the sleeve 12 outward. and thus also allows the valve to he gradually and easily closed by the action of the spring 7, such gradual and easy opening and closingv actions preventing objectionable noise from the passage of the flowing fuel or v'adjustable connection at oneend with the as spasmodic owfof the same. All liabilityA cida/mage to the working parts from irregular" motions is also obviated,

' wliile through the nut 12 the tension of the(A spring 11 may be regulated to secure raliaccurate degree of working action.

,We claim v v1. In avalve motion mechanism for en# ginas, the combination of a valve, asliding valvestem, a push rod having a threaded stem, a'- jam nut associated with such vconnection, a .coiled vspring surrounding the v`alve stem between said nut and a part of the valvecca'sing for normally holding the' valve closed, and adapted tovbe tensioned .by said nut, a sleeve slidably engaging 'the vother end of the push rod, Vabutment and jam nuts in threaded engagement.. with said sleeve, -a coiled cushioning spring surround- 'ing the push rod between saidnuts and a -shoulder -011 said rod and forming a yielding transmitting4 connection between the sleeve l dpies of. this 'patent may be obtained for 'and' push rod, said spring adapted to be v Q i ytensloned by said nuts and means connected z5 with said sleeve for transmitting valve open- 'i c* ing motion thereto f 2. In a valve motion mechanism for engines, the combination ofa valve, a valve stem, asprin'g acting thereon toY hol member `extending"aft right anglesv from thel yoke,- .parallelwitli ther-od and adjustable Y' "y upon'said` yoke withlr relation to the rod.

-'In testimonywherecf y tures in presence of -two witnesses.

WILLIAM E. ADAMS.

. CHARLES B. Witnesses :h f

T. D. Ennis, l H. B. Siurrm.` i

ve cents each, by addressing`the"-Conmiiasoner of Patents.. Washington, D. 0.'

we aflix our signa- 410g?, f'jj 

